From 2d63e8f8d2a8ef70e404182caf5b0d95dbcf2027 Mon Sep 17 00:00:00 2001
From: Andreas Gustafsson <source@isc.org>
Date: Tue, 8 Aug 2000 18:41:42 +0000
Subject: [PATCH] dns_db_attach() failed to check the requirement that the
 pointer being attached to is NULL

---
 lib/dns/db.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/dns/db.c b/lib/dns/db.c
index ac2cf40486..63ba426d3f 100644
--- a/lib/dns/db.c
+++ b/lib/dns/db.c
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: db.c,v 1.50 2000/08/03 19:46:31 bwelling Exp $ */
+/* $Id: db.c,v 1.51 2000/08/08 18:41:42 gson Exp $ */
 
 /***
  *** Imports
@@ -98,7 +98,7 @@ dns_db_attach(dns_db_t *source, dns_db_t **targetp) {
 	 */
 
 	REQUIRE(DNS_DB_VALID(source));
-	REQUIRE(targetp != NULL);
+	REQUIRE(targetp != NULL && *targetp == NULL);
 
 	(source->methods->attach)(source, targetp);